JP2005531872A - Information storage medium and recording and / or reproducing method thereof - Google Patents

Abstract

An information storage medium in which information related to a user data area is recorded and a recording and / or reproducing method thereof are disclosed. The disclosed information storage medium is characterized in that information relating to the user data area is recorded in at least one of the areas before and after the basic recording unit of the user data area in which user data is recorded. Further, the disclosed information recording and / or reproducing method reproduces information related to the user data area recorded in at least one of the areas before and after the basic recording unit of the user data area in which user data is recorded. And recognizing information related to the user data area using the reproduced information.

Description

  The present invention relates to an information storage medium and a recording and / or reproducing method thereof, and more specifically, an information storage medium in which information about a user data area is recorded inside and / or outside a basic recording unit of the user data area and the recording thereof. And / or a reproduction method.

  In general, an information storage medium is widely used as an information recording medium of an optical pickup device that records / reproduces information in a non-contact manner. An optical disk, which is a kind of information storage medium, is a compact disk (CD) or a digital multi-disc depending on the information recording capacity. It is divided into functional discs (DVD). Examples of optical disks that can be recorded, erased and reproduced include 650 MB CD-R, CD-RW, and 4.7 GB DVD + RW. An HD-DVD having a recording capacity of 20 GB or more has also been developed.

As shown in FIG. 1, the general optical disc as described above includes a lead-in area (B), a user data area (A), and an optical disc that are sequentially provided from the inner circumference R _in side to the outer circumference R _out side of the optical disc. A lead-out area (C) is included. The optical disk configured in this way has a structure in which the sector address increases while going from the inner circumference R _in to the outer circumference R _out . Here, the data area (A) includes a plurality of error correction code (ECC) blocks.

  Describing a recordable optical disc, as shown in FIG. 2, address information of each ECC block is recorded by groove wobbling. This is because when data is recorded / reproduced, it is recorded or reproduced at random regardless of the physical address order of the basic recording unit. In particular, when a physical address is recorded by wobbling, information on the user data area can be recorded in the groove. On the other hand, the recordable optical disc does not include layer information as a single optical disc. In addition, there is a problem that it is difficult to maintain the consistency of the format with a read-only optical disc described later.

  For example, as shown in FIG. 3, each ECC block is composed of a total of 16 sectors from 0 sector to 15 sectors. As shown in FIG. 3, a sector is formed at the head of each sector forming the ECC block. An address (SA) is recorded. That is, in the optical disk configured as described above, information related to user data, that is, address information is recorded in an ECC block in the user data area.

  On the other hand, unlike the recordable optical disk described later, this read-only optical disk does not have grooves in the user area, so it is required to record information related to the user data area in a different manner from the recordable optical disk. Has been.

  Further, the optical disc as described above is being developed in the direction of increasing the recording capacity. As a typical method for increasing the recording capacity, there is a method of shortening the wavelength of the recording light source and increasing the numerical aperture of the objective lens. In addition, there is a method of forming an information storage layer in multiple layers.

  A DVD-ROM having a multi-layer information storage layer is disclosed in U.S. Pat. No. 5,881,032 (invention name: optical disk, and optical disk production method and aperture complementation a meth- almalistic complementation). Yes.

The sector address structure of the disclosed optical disc having the two-layer information storage layer is shown in FIG. 4A. Referring to FIG. 4A, are provided first information storage layer L ₁ and the second information storage layer L ₂ is the optical disc. Each information storage layer includes lead-in areas 1a and 2a and lead-outs 1b and 2b. In the first information storage layer L ₁ , the sector address X increases while going from the inner periphery R _{in of the} optical disc to the outer periphery R _out , and in the second information storage layer L ₂ , the inner periphery R _in of the outer periphery R _{out of the} optical disc is increased. Sector address X ′ increases while going to.

On the other hand, multilayer optical discs having two or more information storage layers are classified into an OTP (opposite track path) type and a PTP (parallel track path) type depending on the direction in which information recorded on the disc is reproduced. OTP is reproduced on the outer peripheral _{R out} direction from the inner circumference _{R in} the first information storage layer _{L 1} as shown in FIG. 4B is performed, then, the inner from the outer periphery _{R out} of the second information storage layer _{L 2} Reproduction is performed _{in the} circumferential R _in direction. In other words, it is a type in which the track spiral direction is alternately formed in the opposite direction for each information storage layer L1, L2.

FIG. 4C shows a multilayer information storage medium having _{first to} fourth information storage layers L ₁ , L ₂ , L ₃ , and L ₄ in the case of OTP. Here, the first to fourth information storage layers L ₁ , L ₂ , L ₃ , and L ₄ include first to fourth lead-in areas 1a, 2a, and 3a alternately in the inner and outer peripheral areas of the optical disc. 4a and first to fourth lead-out areas 1b, 2b, 3b, 4b. Looking at the playback direction of such a four-layer optical disc, the first information storage layer L _{1 has} the inner circumference R _in to the outer circumference R _out , the second information storage layer L _{2 has} the outer circumference R _out to the inner circumference R _in , from the inner circumference _{R in} the third information storage layer _{L 3} to the outer peripheral _{R out,} then regenerated in the inner peripheral _{R in} from the outer circumference _{R out} of the fourth information storage layer _{L 4.}

FIG. 5 shows a two-layer optical disc of the PTP type, _in which information is reproduced from the inner circumference R _in to the outer circumference R _{out of} the first information storage layer L ₁ , and then the second information storage layer L ₂ Information is reproduced from the inner periphery to the outer periphery R _out side. In other words, the track spiral direction is the same for each information storage layer. The first lead-in area 1a on the inner peripheral side of the first information storage layer L ₁ is, the first lead-out area 1b is provided on the outer peripheral side, on an inner peripheral side of the second information storage layer L ₂ The second lead-in area 2a is provided with a second lead-out area 2b on the outer peripheral side.

  In the lead-in areas 1a, 2a, 3a, 4a and the lead-out areas 1b, 2b, 3b, 4b, information relating to the optical disk is recorded. In the case of a recordable optical disk, various conditions related to recording are recorded together. Is done. Therefore, the user data can be normally recorded / reproduced only after the information recorded in the lead-in area and the lead-out area is reproduced. In particular, in the case of an information storage medium having a plurality of information storage layers, information regarding the number of information storage layers is recorded, and such information regarding the number of layers is recorded for each information storage layer. Therefore, it can be understood how many layers of information storage layers are formed by reading any layer of information.

  On the other hand, in the case of a recordable information storage medium, information relating to the information storage layer necessary for data recording must be recorded in the user data area. This is because, at the time of data recording / reproduction, recording or reproduction can be performed at random regardless of the physical address order of the basic recording unit. In particular, when the physical address is recorded by wobbling, information related to the information storage layer can be recorded in the groove. At this time, information relating to the information storage layer can be read into the push-pull channel signal during data recording or reproduction.

  By the way, since the reproduction-only information storage medium has no groove wobble formed in the user data area, information on the information storage layer is obtained by a new method different from the recordable information storage medium as described above. It is required to record.

  The present invention has been devised in view of the above problems, and it is possible to read information about the user data area using the physical address of the user data area, or before the basic recording unit of user data. Alternatively, the object is to provide an information storage medium and a recording and / or reproducing method for recording information related to the user data area, which can provide the information related thereto.

  In order to achieve the above object, the information storage medium according to the present invention has information about the user data area recorded in at least one of the areas before and after the user data area in which user data is recorded. Features.

  The basic recording unit of the user data area is preferably one of a physical cluster, an ECC block, a sector, and a frame. In addition, it is preferable that the information regarding the user data area is recorded in at least one of run-in and run-out provided before and after the physical cluster.

  The information storage medium includes two or more information storage layers. In this case, a pattern recorded in at least one of the areas before and after the user data area is recorded for each of the information storage layers. It is desirable that they are formed differently.

  In order to achieve the above object, a recording and / or reproducing method for an information storage medium according to the present invention provides user data recorded in at least one of areas before and after a user data area in which user data is recorded. The method includes a step of reproducing information relating to the area, and a step of recognizing information relating to the user data area using the reproduced information.

  First, the information storage medium according to the present invention can be applied not only to a recordable information storage medium but also to a reproduction-only information storage medium.

  The recordable information storage medium includes a single layer or two or more information storage layers, and each information storage layer includes a lead-in area, a user data area, and a lead-out area.

  Referring to FIG. 6, at least one of the lead-in area and the lead-out area has a reproduction-only data zone 10, a re-recordable data zone 30, and a reproduction-only data zone 10 that can be re-recorded. A connection zone 20 that connects the zone 20 is provided.

  In the reproduction-only data zone 10, basic information about the information storage medium is recorded in a pit form or a high-frequency groove wobble form. This read-only data zone 10 is provided with an information storage medium related information zone 10a in which the size, version number, recording conditions, etc. of the information storage medium are recorded.

  The connection zone 20 can be provided with a transition zone that connects the reproduction-only data zone 10 and the re-recordable data zone 30. The connection zone 20 can be composed of a mirror zone or a wobble groove zone.

  On the other hand, the re-recordable data zone 30 may include an information storage medium test zone 30a, a drive test zone 30b, an information storage medium control data zone 30c, a defect management zone 30d, and the like. The information storage medium control data zone 30c is provided with at least one information storage medium control area in which information storage medium control related information is recorded. Here, for example, the case where the first to fourth information storage medium control areas 30c-1, 30c-2, 30c-3, and 30c-4 are provided is illustrated. In addition, although not scheduled, at least one reserved area 30c-5, 30c-6 may be further provided as a margin area where other information can be recorded thereafter. The user data area can be formed by, for example, groove wobble.

  On the other hand, the read-only information storage medium includes at least one information storage layer, and each information storage layer includes a lead-in area 40, a user data area 43, and a lead-out area 45 as shown in FIG. . Here, reproduction-only data such as information storage medium related information is recorded in the lead-in area 40 and / or the lead-out area 45, and reproduction-only user data is recorded in the user data area 43.

  Groove tracks 47 and land tracks 48 are alternately formed in the lead-in area 40 and the lead-out area 45. Then, reproduction-only data such as information related to the information storage medium is recorded on the both side walls of the groove track 47 or the land track 48 with a high-frequency groove wobble 49 in the form of a wave. The portion recorded by the high frequency groove wobble 49 is called a high frequency data zone.

  The user data is recorded in the form of pits 50 when the information storage medium substrate is manufactured. Such an information storage medium is a kind of hybrid disk, and is configured with different reproduction channels. In particular, in the recordable information storage medium, read-only data in the lead-in area is reproduced using a push-pull channel, and user data is reproduced using a thumb channel. The area can be reproduced with a push-pull channel, and the user data area can be reproduced with a thumb channel. In this aspect, consistency between the recordable information storage medium and the reproduction-only information storage medium can be ensured.

  In the recordable information storage medium or the read-only information storage medium having the structure as described above, information on the user data area, for example, the number of information storage layers when the information storage layer is a single layer or a multilayer, and what number There are the following methods for knowing information on whether to reproduce information from the storage layer.

  Generally, in the user data area, a physical address is recorded for each basic recording unit in which data is recorded.

  The method according to the first embodiment will be described by taking an information storage medium having two information storage layers as an example. In this case, physical addresses 0 to 30000 can be recorded in the first information storage layer, and 30001 to 60000 can be recorded in the second information storage layer. Here, the number of information storage layers can be detected by the physical address. That is, each time the pickup approaches the optical disk for recording / reproducing data, the physical address of each basic recording unit is reproduced. At this time, if the physical address is in the range of 0 to 30000, In the case of the first information storage layer, if the physical address is within the range of 30001 to 60000, it can be determined that the second information storage layer is recognized.

Figure 8 shows the order in which the search for the first information storage layer L ₁ in the information storage medium having one or more layers of information storage layers.

First, an information storage medium is loaded onto a turntable of an optical recording / reproducing drive (S100), and information storage medium related information is reproduced by an optical pickup device (S110). Next, in order to record or reproduce data on the information storage medium, it moves to a predetermined recording / reproducing layer (S120). After accessing the moved predetermined layer to perform focusing and tracking, the address of the corresponding area is reproduced. Then, it is determined whether this address is within a predetermined range (S130). For example, to determine if it is within Likewise 30000 ranging from 0 address and the above-described case, if within the range, recognizes the first information storage layer L _1, the data recording or reproduction is advanced ( S140). However, when the address is not within the range of 0 to 30000, the position of the light spot formed by the optical pickup moves to another layer (S150), and the above process, that is, the address is within the predetermined range. The process of determining whether or not is repeated (S160). That is, it is determined whether or not the address is within a predetermined range, and if applicable, recording or reproduction is performed, and if not, moving to another layer. By repeating this process, Sagashidaseru the first information storage layer L _1.

FIG. 9 shows a process of searching for the first information storage layer L ₁ and the second information storage layer L ₂ in the information storage medium including the first and second information storage layers L ₁ and L ₂ .

First, the information storage medium is loaded onto the turntable of the optical recording / reproducing drive (S1100), and the information storage medium related information is reproduced by the optical pickup device (S1110). Next, the recording medium is moved to a predetermined recording / reproducing layer in order to record or reproduce data on the optical disc (S1120). After accessing the moved predetermined layer to perform focusing and tracking, the address of the corresponding area is reproduced. Then, it is determined whether this address is within a predetermined range (S1130). Here, it is determined whether the address is from 0 to 30000 range, if within the range, recognizes the first information storage layer L _1, the data recording or reproduction is advanced (S1140). When the address is not within the range, the light spot moves to another layer (S1150).

Then, the address is a predetermined range, for example, to determine if it is within 30001-60000 range (S2210), if within this range, recognizes the second information storage layer _{L 2,} with respect to the information storage layer The data is recorded or reproduced (S2220).

  Here, the case where the first and second information storage layers are provided has been described, but the information related to the information storage layer can be provided by the same method even when the information storage layer is configured with more information storage layers.

  Next, as a second embodiment, there is a method of recording information relating to the user data area, for example, layer information, in at least one of the front and rear areas of the basic recording unit in which data is recorded. Basic recording units for recording data include physical clusters, ECC blocks, sectors, frames, etc., and their capacities need not be limited.

  FIG. 10 is a diagram in which information about the user data area is recorded as address information outside each ECC block composed of a plurality of sectors, that is, inside and / or outside the ECC block. Here, the information regarding the user data recorded inside and / or outside is the ECC block address. The ECC block address preferably includes layer information indicating the number of layers of the information storage medium. That is, layer information is recorded using addresses.

  FIG. 11A shows a case where data is recorded in a physical cluster. Referring to this drawing, run-in and run-out for recording additional data before and after the physical cluster are provided. . FIG. 11B is a diagram illustrating a case where physical clusters are continuously formed. Here, information relating to the user data area, for example, layer information can be recorded in at least one of the run-in and run-out. In particular, it is desirable that such a method is applied to a read-only information storage medium to ensure consistency in format with a recordable information storage medium.

  The information storage medium according to the third embodiment relates to an information storage medium including at least two information storage layers, and stores each information by changing a pattern for each layer in at least one of the run-in and run-out. It may indicate layer information about the layer.

For example, a mark or a pit and a space interval on the information storage medium in the first information storage layer L ₁ having an information storage layer of the two layers is composed of a pattern of 5T / 5T / 5T / 5T, the second information storage layer L ₂ Can be composed of 8T / 8T / 8T / 8T patterns. Thus, the number of information storage layers can be recognized by configuring different patterns of the same size.

Or, first the information storage layer _{L 1} marks or pits and spaces interval is composed of a pattern of a 2T / 9T / 2T / 9T, is composed of a pattern of a second the information storage layer _{L 2 9T / 2T / 9T /} 2T sell. In this way, patterns having different sizes can be randomly configured to recognize the number of information storage layers.

  According to the above method, information can be easily stored by forming a pattern that is distinguished from layer to layer in at least one of the areas provided before and after the basic unit of the user data area, for example, run-in and run-out. Know the number of layers. For example, the basic recording unit may be any one of a physical cluster, an ECC block, a sector, and a frame.

  As described above, the information storage medium and the recording and / or reproduction method thereof according to the present invention include information on the user data area, for example, information on whether the information storage medium is a single layer or a multi-layer, and how many layers if the information storage medium is a multi-layer. By presenting various methods that can provide information on whether or not it is applicable, information on the user data area can be efficiently recorded and / or reproduced even in the absence of groove wobble. This is very effectively applied to a reproduction-only information storage medium having no groove wobble and enables reliable data reproduction. In addition, a variety of methods that can record information relating to the user data area by a new method other than a method of recording information on the user data area in a groove wobble is also provided for a recordable information storage medium.

  While several embodiments of the invention have been illustrated and described, modifications can be made by one skilled in the art without departing from the principles and spirit of the invention and within the scope of the claims and their equivalents. .

1 is a diagram showing a general single-layer optical disc. It is a figure which shows the address structure of one ECC block of the recordable optical disk. It is a figure which shows the address structure of one ECC block of a read-only optical disk. It is a figure which shows the sector address structure of the 2 layer optical disk of the conventional DVD-ROM. FIG. 10 is a diagram showing an arrangement structure of lead-in and lead-out areas in the case of OTP in a conventional dual-layer DVD-ROM optical disc. FIG. 10 is a diagram showing a layout structure of lead-in and lead-out areas in the case of OTP in a conventional DVD-ROM four-layer optical disc. It is a figure which shows the arrangement structure of a lead-in and lead-out area | region in the case of PTP in the conventional dual layer optical disk of DVD-ROM. FIG. 4 is a diagram showing a data structure of a lead-in area or a lead-out area of a recordable information storage medium, which is a related technique of the present invention. 1 is a diagram schematically showing the overall structure of a read-only information storage medium, which is a related technique of the present invention. FIG. FIG. 5 is a flowchart illustrating a method for recording and / or reproducing an information storage medium according to an embodiment of the present invention. FIG. 6 is a flowchart illustrating a method for recording and / or reproducing an information storage medium according to another embodiment of the present invention. It is a figure which shows that the information regarding the user data area about the basic recording unit of one user data area of the information storage medium based on the Example of this invention was recorded. It is a figure which shows one recording unit of the information storage medium based on this invention. It is a figure which shows the case where a recording unit is comprised continuously.

Claims (38)

  An information storage medium including a user data area, wherein information related to the user data area in which user data is recorded is recorded in at least one of an area before and after the basic recording unit. Characteristic information storage medium.   The information storage medium according to claim 1, wherein the basic recording unit of the user data area is one of a physical cluster, an error correction code (ECC) block, a sector, and a frame.   The information storage medium according to claim 2, wherein the information related to the user data area is recorded in at least one of a run-in and a run-out provided before and after the physical cluster. The information storage medium includes two or more information storage layers,
The information related to the user data area is recorded in a different pattern for each of the different information storage layers in at least one of the areas before and after the basic recording unit of the user data area. The information storage medium described.   4. The information storage medium according to claim 3, wherein information relating to the user data area is recorded using an address.   The information storage medium according to claim 3, wherein the information related to the user data area is storage layer information.   The information storage medium according to claim 6, wherein the storage layer information is recorded using an address. The information storage medium includes two or more information storage layers,
The information related to the user data area is recorded in a different pattern for each of the different information storage layers in at least one of the areas before and after the basic recording unit of the user data area. The information storage medium described.   The information storage medium according to claim 1, wherein the information related to the user data area is recorded using an address.   The information storage medium according to claim 1, wherein the information related to the user data area is storage layer information.   The information storage medium according to claim 10, wherein the storage layer information is recorded using an address. A method for recording and / or reproducing data on an information storage medium having a user data area, wherein information relating to the user data area in which user data is recorded is reproduced from at least one of the front and rear areas of a basic recording unit. When,
And a method of recording and / or reproducing data on the basis of information relating to the user data area.   The method according to claim 12, wherein the basic recording unit of the user data area is any one of a physical cluster, an ECC block, a sector, and a frame.   14. The information storage medium recording and / or reproducing method according to claim 13, wherein the information related to the user data area is recorded in at least one of a run-in and a run-out provided before and after the physical cluster. . The information storage medium includes two or more information storage layers,
14. The information related to the user data area is recorded in a different pattern for each of the information storage layers different in at least one of the areas before and after the basic recording unit of the user data area. 4. A recording / reproducing method for an information storage medium according to 1.   14. The information storage medium recording and / or reproducing method according to claim 13, wherein the information related to the user data area is recorded using an address.   14. The information storage medium recording and / or reproducing method according to claim 13, wherein the information related to the user data area is storage layer information.   18. The information storage medium recording and / or reproducing method according to claim 17, wherein the storage layer information is recorded using an address.   The basic recording unit of the user data area is a physical cluster, and information on the user data area is recorded in at least one of a run-in and a run-out provided before and after the physical cluster. Item 13. A method for recording and / or reproducing an information storage medium according to Item 12. The information storage medium includes two or more information storage layers,
13. The information related to the user data area is recorded in a different pattern for each of the information storage layers different in at least one of the areas before and after the basic recording unit of the user data area. 4. A recording / reproducing method for an information storage medium according to 1.   13. The information storage medium recording and / or reproducing method according to claim 12, wherein the information related to the user data area is recorded using an address.   13. The information storage medium recording and / or reproducing method according to claim 12, wherein the information related to the user data area is storage layer information.   23. The information storage medium recording and / or reproducing method according to claim 22, wherein the storage layer information is recorded using an address.   The information storage medium according to claim 1, wherein the information storage medium is a recordable information storage medium.   The information storage medium according to claim 1, wherein the information storage medium is a read-only information storage medium.   The information storage medium according to claim 1, wherein the information storage medium is one of a recordable optical disc and a read-only optical disc.   The information storage medium according to claim 2, wherein the information related to the user data area is recorded using at least one address of an ECC block.   The information storage medium according to claim 3, wherein the information storage medium is a read-only information storage medium.   The information storage medium according to claim 3, wherein each of the information storage layers includes a lead-in area, a lead-out area, and a user data area.   5. The information storage medium according to claim 4, wherein the different pattern is any one of different continuous patterns having the same interval and different patterns having different intervals.   9. The information storage medium according to claim 8, wherein the different pattern is any one of different continuous patterns having the same interval and different patterns having different intervals. In a method of operating a storage medium having a user data area, the method includes:
Accessing information related to a user data area in which user data is recorded from at least one of the front and rear areas of the basic recording unit;
Activating a storage medium based on the accessed information.   Recognizing a layer of a storage medium based on the accessed information, and actuating the storage medium includes recording and / or reproducing data to and from the layer. 33. The method according to 32.   34. The method of claim 33, wherein recognizing the layer comprises recognizing the layer in response to accessed information belonging to a predetermined group of addresses.   The method of claim 32, further comprising identifying a desired layer of a storage medium based on a range to which the accessed information belongs. Confirming the desired layer comprises:
In response to accessed information belonging to a given range. Recognizing a storage layer of the storage medium as a desired layer;
Accessing different storage layers of the storage medium to determine whether the accessed information belongs to a predetermined range in response to the accessed information not belonging to the predetermined range. 36. The method of claim 35, characterized in that   The method of claim 36, wherein operating the storage medium includes recording and / or reproducing data to a desired layer.   Confirming a storage layer of the storage medium, wherein the storage layer recognition step recognizes the first layer of the storage layer in response to accessed information belonging to a first predetermined range; and Accessing the second layer of the storage layer to determine whether the accessed information belongs to the second predetermined range in response to the accessed information not belonging to the range; and the second predetermined range Recognizing the second layer of the storage layer in response to the accessed information belonging to, and the accessed information in response to the accessed information of the second layer not belonging to the second predetermined range 33. The method of claim 32, comprising accessing another layer of the storage layer to determine whether it belongs to the second predetermined range.

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